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Comments to California on Regulating Greenhouse Gas Emissions from Vehicles

EPA has indicated that it intends to weaken its emission standards for light-duty vehicles and that it may attempt to revoke California’s ability under the Clean Air Act to maintain these protective standards. Our comments to California’s Air Resources Board (CARB) discuss the substantial economic benefits that California would gain from maintaining the more stringent standards that both EPA and California currently require. We submitted our report, Analyzing EPA’s Vehicle-Emissions Decisions, to CARB to provide additional information on why weakening vehicle emission standards set for years 2022-2025 would be economically irrational.